Governor mechanism.



0. D. H. BENTLEY.

GOVERNOR MECHANISM.

APPLICATION FILED MAR. 15, m7.

Patented Jan. 8, 1918.

2 SHEETS-SHEET 1.

0. D.-H. BENTLEY.

GOVERNOR MECHANISM. APPLICATION FILED MAR. 15. 1917.

Patented Jan. 8,1918.

2 SHEETS-SHEET 2 mam T FFTQE.

OLIVER I). H. BENTLEY, OF WEST ROXBURY, MASSACHUSETTS, ASSIGNOR TO B. F. STURTEVAN'T COMPANY, OF HYDE PARK, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

GOVERNOR MECHANISM.

Application filed Mar-ch 15, 1917.

To all whom it may concern:

Be it known that I, OLIVER D. H. BENT.

and State of Massachusetts, have invented certain new and useful Improvements in Governor Mechanisms; and I do hereby de-.

cla-re the following to be a full, clear, and exact description of the invention,--such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to the governing of steam-turbines or similar engines.

It has heretofore been proposed to connect an engine with a throttling-governor by mechanism which is adjustable to drive the governor at different speeds relative to that of the engine, whereby the normal speed of the engine may be varied without change in the normal speed of the governor. One object of the present invention is to produce a mechanism for driving a governor at variable speed, which mechanismis particularly adapted for use in connection with a steam-turbine, and in which the parts are so constructed and arranged that the mechanism may be adjusted, both to change the speed of the governor and to compensate for wear in the frictional transmission-mechani sm which is employed, without interference with the continued operation of the mechanism.

Another object; of the invention is to pro-.

duce a compact and simple arrangement of parts, in which the power-transmitting mechanism is thoroughly incased and the driving-connections are direct and simple.

The objects just mentioned, and others which will be set forth, are attained by the construction hereinafter set forth and illustrated in the accompanying drawings.

In the drawings Figure 1 is a front-elevation of a steam-turbine provided with governor-mechanism embodying the present invention; Fig. 2 is a detail-view, in section on the line 22 in Fig. 1, but on a larger scale than the latter figure; Fig. 3 is a sideelevation of the structure shown in Fig. 1, partly in vertical section on the line 3-3 in the latter figure; and Fig. i is a partial horizontal section on the line 4.-4 in Fig. 1.

The invention is illustrated as embodied in apparatus comprising a steam-turbine of a familiar form, this turbine having the usual casing 10, Within which the wheel or Specification of Letters Patent.

Patented J an. 8, 1918.

Serial No. 154,952.

rotor 11 is inclosed. The nozzles and other static members of the turbine are inclosed wlthln, and supported by, the casing, and" the casing is provided with'a steam-chamber 1a through which steam is supplied to the.

several nozzles in the usual manner. The steam is introduced to the steam-chamber through a governor-valve 13 controlled bv a throttling governor having centrifugal mechanism 16 of a familiar form. The governor. is. provided with the. usual horizontal drive-shaft 17, as shown in Fig. 1.

he governor-valve 13 is connected with.

the steam-chamber 1.4; through a rigid pipe or connection 15, which supports the governor-valve and the governor in stationary relation to the turbine-casing 10.

The governor is actuated by power derived from the turbine through variablespeed frictional drive-mechanism. As shown in Figs. 3 and 4, the rotor 11 is mounted on the usual horizontal shaft 12, and upon one end of this shaft is fixed a plate 18, on the outer face of which a flat drivingdisk 19 is mounted, this disk being of any material suitable for use in a frictional drive. The driving-disk cooperates with a frictionwheel 20, of suitable material, which is provided with a hub 21 splined to a countershaft 22. The countershaft is parallel with the face of the disk, so. that the wheel maybe moved along the shaft, toward and from the center of the disk, to vary the speed of the drive while maintaining proper engagement between the wheel and the disk. 7

The countershaft is mounted in ball-bearings 23, which are supported in a housing which incloses the driving-disk and the friction-wheel. This housing comprises an in ner member 24 which is stationary, this member being fixed to a part 25 of the rigid framework of the turbine, so that the housing is connected in permanent relation with the turbine-casing. V

The outer member of the housing comprises, integrally, a plate 26 which covers the face of the driving-disk, and a forwardlyprojecting casing 27 which incloses the friction-Wheel and part of the countershaft. The ball-bearings 23 are secured in shells 9.8 fixed in the end-walls of the part 27. as shown in Fig. 4., so that the countershaft is supported by the outer housing-member,

One end of the countershaft projects from the housing substantially in line with the the friction-wheel its hub 21 is slotted to re- 7 ceive pins in a fork 30'which embraces the hub. This fork has a threaded hub which embraces a threaded shaft 31, the shaft bemg journaled on the outer housing-member parallel with the countershaft 22. Theshaft 31 is connected, by gears 32, with a short shaft 33, journaled in a casing 34: which also incloses the gears 32 and is rigidly fixed to the housing-member 27. By the application of a suitable wrench or handle to the squared end of the shaft 33 the shafts 33 and 31 may be rotated, so as to cause the fork 30 to slide the friction-wheel along the countershaft.

In order that the frictional drive-mechanism may operate effectively for long periods it is necessary that provision be made to compensate for wear upon the members, to maintain a tractional engagement of sufficient force between them. In the present construction this is accomplished, in a simple manner, by providing for a yielding movement of the outer housing-member relative to the inner member. The outer member is provided with a rearwardly-projecting annular flange 35, which fits loosely within the marginal lip of the inner housing-member 24, so as to maintain the concentric relation of the members. The peripheral flange 36 of the outer housing-member is perforated, at intervals, to receive screws 37, which pass loosely through the perforations and are threaded into the inner housing-member. A coiled spring 38 mounted on each screw presses against the flange 36, and thus forces the outer housing-member inwardly with a constant pressure sutlicient to maintain the proper engagement between the frictioncompensating action of the springs 38 does not'in any way disturb the relative arrangement of these parts. Such slight relative lateral movement as occurs between the'countershaft 22 and the drive-shaft 17 is readily the turbine, the governor and the governoractuating means constitute a self-contained assemblage or unit of which the parts may be assembled permanently intheir operative relation, and will then maintain this relation regardless of the manner in which the turbineis mounted. n

Th invention is not limited to the embodiment thereof hereinbefore described and illustrated in the accompanying drawings, but it may be embodied in various other forms within the scope of the following claims.

The invention, and the preferred form of practising .it, having been described, it is definitely stated in its true scope in the following claims. i

What is claimed as new is: 1 7

l. The combination, with a turbine and a governor therefor, of a'friction-disk mounted on one end of the turbine-shaft; a housing inclosing the disk and connected with the turbine-casing; a friction-wheel c'ooper- Y ating with the disk; a countershaft, upon which the friction-wheel is splined, 'journaledon the housing; connections between the countershaft and the governor, for actuating the latter; and means for adjusting the friction-wheel along thecountershaft 2. The combination, with a turbine'and a which the friction-wheel is splined, jour-j naled on the housing; connections between the countershaft and the governor, for actuating the latter; and yielding means'connecting the housing-members together at their peripheries to maintain a tractional pressure of the friction-wheel against the disk.

3. In governor-mechanism for turbines,

the combination of a friction-disk; a fric- V tion-wheel cooperating with the disk; a

countershaft on which the friction-wheel is splined; meansfor adjusting the friction- 'wheel along the countershaft; a housing,

inclosing the friction-disk and the'frictionwheel, comprising two relatively movable members on one of which the countershaft is journaled; yielding means for moving the housing-members relatively to maintain a tractional pressure of the friction-wheel against the disk; a governor; and connections, between the governor and the countermovement of the countershaft due to said relative movement of the housing-members.

4. The combination with a turbine and a governor therefor, of a friction-disk mounted on one end of the turbine shaft, a fricshaft, adapted to accommodate the lateral tion-wheel cooperating; with the disk, a

countershaft upon which the friction-wheel 1S splined, bearings for the countershaft,

yielding means for forcing the bearings toed on one end of the turbine shaft, a stationary housing connected with the turbine casing, a movable housing carried by the stationary housing, a countershaft mounted in bearings in the movable housing, a friction-wheel mounted upon the countershaft and cooperating withthe disk, means for adjusting the friction wheel across the face of the disk, and connections between the 20 countershaft and governor.

OLIVER D. H. BENTLEY.

Copies of, this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

